AB board



FIG. 1 is a top plan view of an AB board showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left elevational view thereof;

FIG. 4 is a right elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a back elevational view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is an environmental perspective view of the device.

The broken lines in FIG. 8 show environmental structure associated with the AB board in a condition of use, and form no part of the claimed design. 

CLAIM The ornamental design for AB board, as shown and described. 